Striation (noun)

1. A thin linear marking or groove, especially one that is part of a larger pattern or structure.
2. The act or process of making such markings or grooves.

Origin:

From latin stria, meaning "stripe, furrow, groove".

Examples:

1. The rock showed clear striations from the glacier movement.
2. The striations on the knife's blade indicated that it had been sharpened many times.
3. The muscles in his back showed striations from weightlifting.
4. The striations on the fossilized shell were evidence of the organism's growth patterns.
5. The striation process of metalworking is used to create grooves or ridges on the surface of metal.